Dimitri Fontaine is a PostgreSQL major contributor (design, review, Extensions, Event Triggers, Bi Directional Replication). He contributes to Skytools (PGQ, Londiste) and develops pgloader, prefix and other software (mostly related to PostgreSQL or Emacs, or both). Dimitri works at 2ndQuadrant from France.
We call it the world's most advanced open source database, and we are actually offering in the same package full ACID compliance per default and advanced trade-offs to reach any kind of flexibility needed, all with per-transaction controls. That's including your replication and High Availability setup. Given proper use of those controls and some schemaless extensions, PostgreSQL really is web scale!